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Condensed Consolidated Unaudited Statements of Shareholders' Equity - USD ($)
$ in Thousands
Total
Common Stock, Class B Common Stock and Preferred Stock
Paid-In Capital
Accumulated Other Comprehensive Loss
Retained Earnings
Treasury Stock
Non-controlling Interest
Beginning balance at Dec. 31, 2019 $ 1,714,767 $ 21,533 $ 907,877 $ (39,050) $ 632,507 $ (87,440) $ 279,340
Beginning balance (in shares) at Dec. 31, 2019   38,194,056          
Net income 36,247       30,502   5,745
Other comprehensive (loss) income (19,280)     (12,739)     (6,541)
Issuances of non-vested restricted shares of common stock   $ 57 (57)        
Issuances of non-vested restricted shares of common stock (in shares)   113,765          
Common stock contribution to 401(k) plan 4,543 $ 13 4,530        
Common stock contribution to 401(k) plan (in shares)   25,216          
Stock issuances from exercise of stock options and employee stock purchase plan 2,541 $ 9 2,532        
Stock issuances from exercise of stock options and employee stock purchase plan (in shares)   18,674          
Retirement of common stock (791) $ (2) (789)        
Retirement of common stock (in shares)   (4,828)          
Share-based compensation 6,097   6,097        
Cash dividends declared and paid on Common and Class B common stock (61,238)       (61,238)    
Ending balance at Mar. 31, 2020 1,682,886 $ 21,610 920,190 (51,789) 601,771 (87,440) 278,544
Ending balance (in shares) at Mar. 31, 2020   38,346,883          
Beginning balance at Dec. 31, 2020 1,779,761 $ 21,697 950,915 (34,867) 636,373 (87,440) 293,083
Beginning balance (in shares) at Dec. 31, 2020   38,521,694          
Net income 66,127       55,092   11,035
Other comprehensive (loss) income 3,776     2,474     1,302
Issuances of non-vested restricted shares of common stock   $ 61 (61)        
Issuances of non-vested restricted shares of common stock (in shares)   121,934          
Forfeitures of non-vested restricted shares of common stock   $ (21) 21        
Forfeitures of non-vested restricted shares of common stock (in shares)   (43,000)          
Common stock contribution to 401(k) plan 5,154 $ 11 5,143        
Common stock contribution to 401(k) plan (in shares)   22,752          
Stock issuances from exercise of stock options and employee stock purchase plan 3,874 $ 12 3,862        
Stock issuances from exercise of stock options and employee stock purchase plan (in shares)   24,735          
Share-based compensation 6,656   6,656        
Cash dividends declared and paid on Common and Class B common stock (68,521)       (68,521)    
Ending balance at Mar. 31, 2021 $ 1,796,827 $ 21,760 $ 966,536 $ (32,393) $ 622,944 $ (87,440) $ 305,420
Ending balance (in shares) at Mar. 31, 2021   38,648,115